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cmd/compile: skip diag error in checkassign if one was emitted

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While at it, also remove checkassignlist, which is not used.

For #43311

Change-Id: Ie7ed81f68080d8881fca6035da64a9755f2cb555
Reviewed-on: https://go-review.googlesource.com/c/go/+/294032
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Cuong Manh Le 2021-02-19 13:47:14 +07:00
parent 12a405b96a
commit 8c22874e4e
1 changed files with 4 additions and 7 deletions
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11
src/cmd/compile/internal/typecheck/typecheck.go
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@ -1612,6 +1612,10 @@ func checkassign(stmt ir.Node, n ir.Node) {
return
}
defer n.SetType(nil)
if n.Diag() {
return
}
switch {
case n.Op() == ir.ODOT && n.(*ir.SelectorExpr).X.Op() == ir.OINDEXMAP:
base.Errorf("cannot assign to struct field %v in map", n)
@ -1622,13 +1626,6 @@ func checkassign(stmt ir.Node, n ir.Node) {
default:
base.Errorf("cannot assign to %v", n)
}
n.SetType(nil)
}
func checkassignlist(stmt ir.Node, l ir.Nodes) {
for _, n := range l {
checkassign(stmt, n)
}
}
func checkassignto(src *types.Type, dst ir.Node) {